Backrake 2

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Backrake 2
Backrake 2 image
Pattern type Rake
Number of cells 65
Bounding box 19×26
Direction Orthogonal
Period 12
Speed c/2
Discovered by David Buckingham
Year of discovery Unknown

Backrake 2 is a period 12 backrake that was created by David Buckingham. It works by having a front puffer made up of two lightweight spaceships, a middleweight spaceship, and a B-heptomino (much like puffer 2) send debris back to another lightweight and middleweight spaceship, which turn the debris into a backward-moving glider.

Three copies of this backrake feature in total aperiodic.